Respuesta :
Answer:
x = 21.3
Step-by-step explanation:
The average is calculated as
average = [tex]\frac{score}{count}[/tex], that is
[tex]\frac{x+2.7}{2}[/tex] = 12 ( multiply both sides by 2 )
x + 2.7 = 24 ( subtract 2.7 from both sides )
x = 21.3
Answer:
x = 21.3.
Step-by-step explanation:
From the definition of an arithmetic mean:
(2.7 + x) / 2 = 12 Multiply through by 2:
2 .7 + x = 24
x = 24 - 2.7
x = 21.3.
